32-inch SONY LCD TV screen up and down the maintenance experience - android - Phones Developers

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

Modern skhynix emcp 64+32 H9HP52ACPMMD

0603 Blu-ray factory direct sales

This SONY 32-inch LCD TV had vertical lines during the three-year screen warranty period. At that time, I thought it was a screen issue and advised the customer to contact after-sales for free repair and screen replacement. Some time later, the customer mentioned that the TV was shaking up and down again. The cable TV technician came to check and also said it was a TV problem. The customer then asked me to come and fix it. After checking, I still believed it was a screen issue and brought it back to the store for further inspection. In previous repairs of similar problems, I found that some screens have an independent logic board connected via a cable to the side board. Additionally, there are separate ICs on the left and right sides of the screen. If one side is faulty, removing the corresponding IC from the other side usually solves the issue. However, when I opened this particular screen, I noticed that the logic board was integrated with the side board, and there were no separate ICs on the left or right—those were directly bonded to the glass. So, I told the customer it couldn’t be repaired and only the screen could be replaced. But the customer insisted on sending it back to me. A few days ago, I saw a post online that described a similar solution. It gave me an idea, so I decided to try it out. After disassembling the screen, I saw that the ICs were directly bonded to the glass. The logic board was connected via two flexible cables. On the right side, there were labels like CKV1, CKV2, CKVB1, CKVB2 (the original post mentioned six connections, but I only found four). These four wires were connected on both sides. I carefully cut the wires leading to the glass without the IC. After testing, the image was normal and no longer shook. Occasionally, I saw a green horizontal line, but it didn’t affect the viewing experience. I think this might have been how the screen was sold in the first place. Thanks to the sharing of "li761996837" on the forum, I’ve learned a lot over the years. Without such helpful guidance, it would take much longer to gain this knowledge. I really appreciate everyone who shares their experiences. The forum is more exciting because of your contributions!